llvm/docs/CommandGuide/llvm-as.html

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LLVM: llvm-as tool
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<center><h1>LLVM: <tt>llvm-as</tt> tool</h1></center>
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<h3>NAME</h3>
<tt>llvm-as</tt>

<h3>SYNOPSIS</h3>
<tt>llvm-as [options] [filename]</tt>

<h3>DESCRIPTION</h3>

The <tt>llvm-as</tt> command is the LLVM assembler.  It reads a file containing
human readable LLVM assembly language, translates it to LLVM bytecode, and
writes the result into a file or to standard output.
<p>

If filename is omitted or is -, then <tt>llvm-as</tt> reads its input from
standard input.
<p>

If an output file is not specified with the <tt>-o</tt> option, then
<tt>llvm-as</tt> sends its output to a file or standard output by the following
logic:

<ul>
	<li>
	If the input is standard input, then the output is standard output.
	<p>

	<li>
	If the input is a file that ends with .ll, then the output file is of
	the same name, except that the suffix is changed to .bc.
	<p>

	<li>
	If the input is a file that does not end with the .ll suffix, then the
	output file has the same name as the input file, except that the .bc
	suffix is appended.
	<p>
</ul>

<h3>OPTIONS</h3>

<ul>
	<li> -f
	<br>
	Force overwrite.  Normally, <tt>llvm-as</tt> will refuse to overwrite an
	output file that already exists.  With this option, <tt>llvm-as</tt>
	will overwrite the output file and replace it with new bytecode.
	<p>

	<li> -help
	<br>
	Print a summary of command line options.
	<p>

	<li> -o &lt;filename&gt;
	<br>
	Specify the output filename.  If filename is -, then <tt>llvm-as</tt>
	sends its output to standard output.
	<p>

	<li> -stats
	<br>
	Print statistics.
	<p>

	<li> -time-passes
	<br>
	Record the amount of time needed for each pass and print it to standard
	error.
	<p>
</ul>

<h3>EXIT STATUS</h3>

If <tt>llvm-as</tt> succeeds, it will exit with 0.  Otherwise, if an error
occurs, it will exit with a non-zero value.

<h3>SEE ALSO</h3>

<a href="llvm-dis.html"><tt>llvm-dis</tt></a>
<a href="gccas.html"><tt>gccas</tt></a>


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Maintained by the <a href="http://llvm.cs.uiuc.edu">LLVM Team</a>.
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